Clean Water Act discharge permit · NPDES MD3418E02
CALVERT GATEWAY WWTP AND WTP, Dunkirk, MD: NPDES MD3418E02 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
CALVERT GATEWAY WWTP AND WTP, held by DUNKIRK GATEWAY BUSINESS PARK ASSOCIATION, INC., holds NPDES permit MD3418E02, which discharges to Lower Patuxent River. EPA’s file records it issued December 15, 2020 and expiring December 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CALVERT GATEWAY WWTP AND WTP |
|---|---|
| Permittee as filed | DUNKIRK GATEWAY BUSINESS PARK ASSOCIATION, INC. |
| NPDES ID | MD3418E02 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | State-issued individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 15, 2020 |
| Expiration date | December 31, 2025 |
| Issuing agency | MARYLAND DEPARTMENT OF THE ENVIRONMENT |
| Address | Dunkirk, MD 20754 |
| Receiving water | LOWER PATUXENT RIVER |
| Subwatershed | Hall Creek (HUC 020600060503) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 16Under a numeric limit
- 14With a violation of any kind
- 7With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Nitrogen, total [as N] | 11 | 95 | 69 | July 31, 2026 | 436% over the limit |
| BOD, 5-day, 20 deg. C | 1 | 32 | 32 | June 30, 2026 | 811% over the limit |
| Solids, total suspended | 1 | 24 | 24 | November 30, 2023 | 160% over the limit |
| Coliform, fecal general | 9 | 23 | 7 | December 31, 2024 | 227,184% over the limit |
| BOD, 5-day | 1 | 14 | 5 | June 30, 2026 | 811% over the limit |
| Flow, discharge | 1 | 10 | 1 | December 31, 2022 | 46% over the limit |
| Suspended solids | 1 | 10 | 1 | November 30, 2023 | 23% over the limit |
| Nitrogen, Kjeldahl, total [as N] | 10 | 38 | 0 | ||
| pH | 9 | 16 | 0 | ||
| Nitrogen, nitrite total [as N] | 9 | 16 | 0 | ||
| Nitrogen, nitrate total [as N] | 9 | 16 | 0 | ||
| Phosphate, total [as PO4] | 9 | 16 | 0 | ||
| Solids, total dissolved | 9 | 16 | 0 | ||
| Chloride [as Cl] | 9 | 15 | 0 | ||
| Flow | 2 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MD3418E02.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MD3418E02.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MD3418E02 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.